Litter box cover



FIG. 1 is a perspective view of my new design for a litter box cover, the floral surface decoration and chimney well insert in phantom being no part of the design;

FIG. 2 is another perspective view thereof, showing the hinged door of FIG. 1 in an open position, reveling an attic floor for storage;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a rear elevational view of FIG. 1;

FIG. 5 is a left side elevational of FIG. 1;

FIG. 6 is a right side elevational view of FIG. 1;

FIG. 7 is a top plan view of FIG. 1; and,

FIG. 8 is a bottom plan view of FIG. 1. 

The ornamental design for a litter box cover, as shown and described. 